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Adrian R.

Adrian R.

Senior Full Stack Engineer | Next.js & Node.js | SaaS Architecture

Are you looking for an engineer who doesn't just write code, but architectures scalable, high-performance web applications? With 5+ years of experience, I specialize in the modern JavaScript/TypeScript ecosystem to build robust SaaS platforms, complex dashboards, and seamless APIs.I go beyond basic development by integrating AI tools (Claude, Gemini) into my workflow to accelerate development cycles, automate testing, and deliver production-ready features faster and with fewer bugs.🔹 Core Expertise & Tech Stack: ✅ Frontend Architecture: React.js, Next.js, React Native, and Angular. Focus on modular design, UI/UX performance, and improving Core Web Vitals. ✅ Backend & Cloud: Node.js, NestJS, Django, and PostgreSQL. Experienced in designing secure RESTful and GraphQL APIs, backed by AWS and Docker. ✅ Business Solutions: Building multi-tenant architectures, interactive analytics dashboards, and integrating seamless payment gateways. ✅ Quality Assurance: Implementation of comprehensive unit and E2E testing (Vitest) and CI/CD pipelines via GitHub Actions. Recent Highlights: ✔️ Architected a scalable web solution leveraging AWS Lambda and GraphQL across multiple databases, driving a 25% reduction in load times. ✔️ Engineered a high-precision healthcare dashboard using React (Vite) for complex clinical data interpretation. ✔️ Led the development of production-grade applications, utilizing AI to optimize database queries and map complex business workflows. Whether you need to build a SaaS from the ground up, refactor legacy code, or scale an existing platform, I deliver efficient, maintainable, and cost-effective solutions. 📩 Let's connect and discuss how my engineering approach can ensure your project's long-term success.

🇻🇪San Cristobal, Venezuela$15/hr100% JSS4.71 (5)Since Jun 2018

Earnings and projects

MRR
$152

Last 6 months ÷ 6

World#122,860 / 412k
🇻🇪Country#1,181 / 3,245
Revenue, last 30 days
$0

Last 6 months: $915

Total earnings
$50k

Billed in all: $50k

World#76,682 / 412k
🇻🇪Country#549 / 3,245
Per project
$7.1k

$915 in the last 6 months

World#23,988 / 412k
🇻🇪Country#246 / 3,245
Projects, last 6 months
1
0% fixed100% hourly
World#128,095 / 412k
🇻🇪Country#1,023 / 3,245
Projects in all
7

Across 10 contracts

0% fixed100% hourly
World#236,190 / 412k
🇻🇪Country#1,466 / 3,245

Earnings, last 30 days

$50kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$49k$50k$51k$52kOct 9Oct 24Nov 8

Skill rankings: Top 18% in Redux

Ranked by MRR among everyone on Upwork with the skill.

  1. #75NestJS Development248 freelancers · 🇻🇪 #1Top 30%
  2. #223Material UI1,027 freelancers · 🇻🇪 #4Top 22%
  3. #579Redux3,245 freelancers · 🇻🇪 #4Top 18%
  4. #990NestJS3,757 freelancers · 🇻🇪 #13Top 26%
  5. #1,322Bootstrap6,899 freelancers · 🇻🇪 #14Top 19%
  6. #1,459Angular6,816 freelancers · 🇻🇪 #14Top 21%
  7. #1,839Firebase6,978 freelancers · 🇻🇪 #8Top 26%
  8. #2,738React Native10,486 freelancers · 🇻🇪 #17Top 26%